VOLUMETRIC BEHAVIOR OF THE ETHANE-1,2-DIOL-DIMETHOXYETHANE BINARY SOLVENT SYSTEM(1,2)

Densities have been measured for 11 binary mixtures of ethane-1,2-diol (ED, component 1) + 1,2-dimethoxyethane (DME, component 2), whose com position covers the whole miscibility field (0 less than or equal to X (1) less than or equal to 1), at 19 temperatures in the range -10 less than or equal to t/degrees C less than or equal to +80. The experimen tal data were used to test some empirical relationships of the general form rho = rho(t), rho = rho(X(1)) e rho = rho(t,X(1)). Furthermore, the experimental densities have been converted into the corresponding excess molar volumes (V-E), which have been discussed and interpreted in terms of the specific intermolecular interactions. The V-E against X(2) plots suggest the presence at each temperature of a more stable h eteroaggregated complex species, at a stoichiometric ratio ED:DME = 2: 1.